3Com NJ220 manuale d’uso

3Com ® IntelliJack ® Switch NJ220 User Guide 3CNJ220 www .3Com.com Par t N o. 10016 226 Rev . AA Published June 2007[...]

3Com Corporation 350 Campus Drive Marlbor ough, MA 01752-3064 Copyright © 2003 – 2007, 3Com Corporation. All right s r eserved. No part of th is documentation may be repr oduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without wr itten permission from 3Com Corporation. 3[...]

C ONTENTS I NSTALLING THE NJ220 I NTELLI J ACK About the IntelliJack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

Advanced Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Event Alerts 802.1X Settings Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 General Configuration .[...]

1 I NST ALLING THE NJ220 I NTELLI J ACK The 3Com NJ220 IntelliJack is a 4-port, managed Ethernet switch that fits into any standard electrical wall outlet or data port opening. It brings switching capabilities to any single port on an Ethernet network by allowing you to connect up to four networking devices, such as computer, printers, and Voice Ov[...]

2 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK • MAC filtering • 802.1x port security • User-configured VLAN IDs for management packets • Port-based “calendar” function About the IntelliJack The following diagram shows the front view of the IntelliJack: 1 Switched ports with LEDs Allow up to four devices to be connected to the netwo[...]

About the IntelliJack 3 The following diagram shows the back view of the IntelliJack: 4 LEDs Indicates network connection status. Indicates power status. 5 Power socket Can be used to power the IntelliJack with a local power supply (available for purchase from 3Com); required if your network does not support Power Over Ethernet. 1 Ethernet uplink p[...]

4 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK Before You Begin Before you begin installation, register your product at: http://eSupport.3com.com/. The IntelliJack is available in single- and 20-packs. Before you begin the installation, make sure you have the following items, which are included with the IntelliJack: • 1.5 inch, 6x32 screws (2[...]

Installing the IntelliJack 5 Installing the IntelliJack Installing the IntelliJack consists of the following steps: 1 Set up the power supply (page 6). 2 Install the adapter plate and pass-through ports (page 8). 3 Plan the installation (page 9). 4 Set up the network cabling at your site (page 10). 5 Connect the IntelliJack to the network (page 10)[...]

6 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK The following diagram displays an overview of the recommended installation, where the IntelliJack is being connected to an Ethernet network cable that is terminated with a female RJ-45 connector. Detailed installation instructions are included in the sections that follow. Setting up the Power Suppl[...]

Installing the IntelliJack 7 The multi-port Ethernet power supply from 3Com connects to an existing Ethernet or Fast Ethernet infrastructure with standard Category 5 or Category 5e UTP cabling, and powers up to 24 IntelliJacks. See “Obtaining Optional Components” on page 4 for ordering information. For complete installation instructions, see th[...]

8 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK Installing the Adapter Plate and Pass-Through Ports Install the blank adapter plate, or if you want to use pass-through ports for connecting an analog or PBX digital telephone or for setting up a connection to a separate network segment, purchase supported connectors and install them on the appropr[...]

Installing the IntelliJack 9 Planning the Installation When installed, the back of the IntelliJack extends into a wall or cubicle opening 1.5 inches. Because the depth of some wall and cubicle openings differ, observe the following requirements and recommendations before installing the IntelliJack: • Make sure the wall or cubicle opening where th[...]

10 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK Setting up the Network Cabling at Your Site The network cabling at your site (from the wiring closet to the wall or cubicle opening) may already be installed. If it is not, install the cabling following these general guidelines. 1 Connect one end of an Ethernet cable to your network. Usually, this[...]

Installing the IntelliJack 11 • If the end of the cable is terminated with a male connector, connect the network cable directly into the Ethernet uplink port. Mounting the IntelliJack After connecting the IntelliJack to the network, use the two provided screws to mount the IntelliJack in any standard NEMA-WD6 cubicle opening or wall outlet. If th[...]

12 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK Connecting the Local Power Supply (Optional) If your network does not support Power Over Ethernet, or if you are not using a single-port or multi-port Ethernet power supply, you must purchase a local power supply from 3Com (see “Obtaining Optional Components” on page 4). To connect the local p[...]

Checking the LEDs 13 5 Plug the local power supply into the power source. Connecting Devices to the IntelliJack After the IntelliJack is installed and mounted, connect your networking devices (such as computers, printers, etc.) to any of the four switched ports on the front of the IntelliJack. If you installed the adapter plate with pass-through po[...]

14 C HAPTER 1: I NSTALLING THE NJ220 I NTELLI J ACK[...]

2 I NST ALLING THE C ONFIGURATION M ANAGERS Once you have installed the NJ220 hardware, you need to configure it for use on your particular network. To configure the NJ220, install the Local and Central Configuration managers. System Requirements The machine you install the software on should meet the following requirements: • Pentium processor ?[...]

16 C HAPTER 2: I NSTALLING THE C ONFIGURATION M ANAGERS 2 If your computer is configured to Auto-Play CDs, the installation will start automatically. If not, double-click the setup.exe icon on the CD, and you will see this window: 3 Click Next to continue.[...]

Installing the Local and Central Configuration Managers 17 4 Carefully read the license agreement. If you agree, click “Yes, I accept” and Next to continue. 5 The installation will present Readme Information. This is also found in the Readme.txt file on the installation CD. Please read the information and click Next to continue.[...]

18 C HAPTER 2: I NSTALLING THE C ONFIGURATION M ANAGERS 6 Enter your user and organization names. You can also specify whether you want the management programs to be available to just you or to anyone that may use the computer you’re installing these applications on. Select the option you prefer and click Next.[...]

Installing the Local and Central Configuration Managers 19 7 The program files will be installed in the directory C:Program Files3ComIntelliJack. If you want to change the location of the installation, click Change. Otherwise click Next to accept the default location and continue.[...]

20 C HAPTER 2: I NSTALLING THE C ONFIGURATION M ANAGERS 8 Select a typical or custom setup and click Next. The Typical installation will install both the Local Configuration Manager and the Central Configuration Manager on your system. The Custom installation option lets you install just one of the programs if you wish. 9 Review the settings you se[...]

Installing the Web Configuration Manager 21 10 When the installation has completed, click the Finish button to close the installation utility. The installation utility will create two shortcut icons on the Desktop--one for the Local Configuration Manager and one for the Central Configuration Manager. You can also launch the programs from a program [...]

22 C HAPTER 2: I NSTALLING THE C ONFIGURATION M ANAGERS To install the 3Com IJ/NJ Web Configuration Manager on a Windows 2000 computer, follow these steps: 1 If your machine does not have the Java Development Kit (JDK) installed, download the installation program from Sun’s Web site and install JDK v1.4. You can find JDK 1.4 at the following URL:[...]

Installing the Web Configuration Manager 23 8 If the ‘webapps’ subdirectory under the Tomcat installation directory already contains a subdirectory called ‘3ComIJNJ,’ delete this directory. 9 Start Apache Tomcat. To do so, open a DOS command window, go to the ‘bin’ subdirectory under the Tomcat installation directory, type ‘startup’[...]

24 C HAPTER 2: I NSTALLING THE C ONFIGURATION M ANAGERS[...]

3 U SING THE L OCAL C ONFIGURATION M ANAGER Initializing the NJ220 IntelliJack Once you have installed the NJ220 hardware on your network and the Local Configuration Manager software on your computer, you need to perform an initial configuration of the IntelliJack. 1 The first step is to connect your computer to the NJ220 that you are installing. A[...]

26 C HAPTER 3: U SING THE L OCAL C ONFIGURATION M ANAGER 5 Enter Location Information for the NJ220 you are currently configuring. This field can help you and other network managers identify this IntelliJack in the future. You may enter any information you like (up to 128 characters), but we recommend that you enter a logical, easy to follow descri[...]

Setting Advanced Options 27 Setting Advanced Options If you want to change the default password of the NJ220 or change SNMP community strings, you can configure these settings from either the Local Configuration Manager or the Central Configuration Manager (covered in the next chapter). In the Local Configuration Manager, both settings are found un[...]

28 C HAPTER 3: U SING THE L OCAL C ONFIGURATION M ANAGER[...]

4 U SING THE C ENTRAL C ONFIGURATION M ANAGER You should use the Local Configuration Manager to initialize each of the NJ220 IntelliJacks installed on your network. Once you have completed that step, you can manage all of them with the Central Configuration Manager. Install this program on any computer on your network you want to use as a central m[...]

30 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER 1 Open the Central Configuration Manager by double-clicking on the IJ NJ Cent Config Mgr desktop icon. When it launches, you will see a window similar to this one: 2 Select Discovery from the Devices menu or click the Discover button on the toolbar. The following window will appear: NOTE: T[...]

Discovering NJ220 Devices on Your Network 31 3 You can discover new devices based on a specific subnet or on a specific range of IP addresses. a To discover devices by subnet, select that option on the screen. Click the Add button to add a new subnet to the discovery list. The following box will appear: Fill in the Subnet and Mask fields and click [...]

32 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER You can view discovered devices many ways. On the left side of the toolbar, you can see a drop down box with options for either Subnet, Firmware Ver, or Group Name. The option you select in this box determines how the views are displayed in the left pane of the window. When Subnet is select[...]

Viewing Device Properties 33 Viewing Device Properties Once the database is populated with NJ220 IntelliJacks on your network, you can begin to manage those devices. The main window of the Central Configuration Manager shows a list of devices in the current database with the information retrieved during the discovery process. You can view and confi[...]

34 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER 2 Select Property from the Devices menu or from the toolbar. You can also open this window by right-clicking your mouse and selecting Property. General Tab 3 With the General tab selected, you can view and edit information about the device such as the IP address, subnet mask, default gatewa[...]

Viewing Device Properties 35 You can double-click on any of the ports to find out more information or configure that particular port. Click OK to save your changes or Cancel to discard them. Product Information 6 Under the Product Information box, you can see the current firmware version of the IntelliJack, the Product Name, and the Serial Number.[...]

36 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER Hardware Settings 7 Click on the Hardware Settings tab to view status information about the switch. Several fields in this window can be edited, a few cannot. You can change the values of the fields with drop-down lists: Priority Schedule Policy, LAN Port Egress Mode, LAN Port Ingress Mode,[...]

Viewing Device Properties 37 9 Click the ATU Table button to make changes to the NJ220’s ATU table. The screen you see allows you to display all MAC addresses that have been plugged into that IntelliJack or just the ones that you have “locked down” to it. You can refresh the list, add MAC addresses to it, edit existing ones or delete entries [...]

38 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER 10 The NJ220 IntelliJack also lets you manage its VLAN table. To access the VLAN table, click on the Manage VLAN Table button. The screen you see allows you to display all the VIDs that have been assigned to that IntelliJack. You can refresh the list of VIDs or add to it. You can edit exist[...]

Viewing Device Properties 39 Statistics Log 11 Click on the Statistics Log tab. From this view you can see statistics about the number of good or bad packets each port has received and transmitted, based on how you have configured the Counter Mode setting (see step 7 on page 36). The bottom half of the window shows Remote MONitoring (RMON) counters[...]

40 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER You can reset all counters to zero by clicking Clear. To save device data to a log file, click Get Device Log. This will prompt you for a filename and location to save the log file. SNMP Settings 13 Click on the SNMP Settings tab to see the following window: 14 You can view and edit the SNM[...]

Viewing Device Properties 41 15 To edit a Trap Destination, enter the IP address of your SNMP management console in the field. This eliminates the need to build a Trap Destination Table via a Management Information Database (MIB) browser. Advanced Settings 16 Click on the Advanced Settings tab to see the following window: 17 You can view the Event [...]

42 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER Different Alert Levels notify you of specific events happening with the IntelliJack. Each level above 0 provides different types of event alerts as described below: Next to the Event Alert Level field is a box labeled Receive Alert. If you are running the Central Configuration Manager on mo[...]

Changing Device Configuration 43 Changing Device Configuration Many of the properties that you can view from the Device Property windows can be changed from the Device Configuration window. Here’s how to use this feature: 1 Select one or more IntelliJacks from the devices list. 2 Select Configuration from the Devices menu or the toolbar, or right[...]

44 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER This window has five tabs across the top--General Configuration, Priority & VLAN Configuration, Security Configuration, SNMP Configuration, and Advanced Configuration. Check the box next to any setting you want to change from within these five areas. The bottom of the window has buttons[...]

Changing Device Configuration 45 transmissions in the Property window because it is unlikely that the IntelliJack will drop any Ethernet Packets. If you believe that the IntelliJack is dropping Ethernet packets, you may want to configure the Counter Mode to count received errors (Rx Errors) and transmission collisions (Tx Collisions). This will giv[...]

46 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER Priority & VLAN Configuration 11 Click the Priority & VLAN Configuration tab along the top of the Device Configuration window to view these settings: Port Based Settings 12 To change the Port Based Settings, first select the Port’s tab you want to make the changes to. 13 To change[...]

Changing Device Configuration 47 14 The default setting for the Default Priority Level is 802.1p Priority 0 or 1. You can change this setting to Priority 2 or 3, Priority 4 or 5, or Priority 6 or 7. The IntelliJack has four traffic queues with two priorities per queue. The lowest numbers (0 and 1) have the lowest priority. The default priority traf[...]

48 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER In a strict priority scheme (the setting’s other option), all highest priority traffic will be removed from the buffer. After it is removed, the next priority traffic type would be removed, and so on. This ensures that the most important or time critical data is passed first, but it could[...]

Changing Device Configuration 49 Security Configuration 21 Select the Security Configuration tab to set the security options of the NJ220 IntelliJack. Password 22 You can change the device password (the default password is “ password ”), and either enable or disable local configuration. 802.1X 23 To change 802.1X settings for a specific port, s[...]

50 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER RADIUS clients. The authenticator controls port access for the network client devices connected to the switch. When the option is set to Disable 802.1X, all packets are processed as a normal Ethernet switch; no 802.1X control applies. With Standard 802.1X selected, control is enabled. Once [...]

Changing Device Configuration 51 26 To set advanced 802.1X security settings, click the Advanced Settings button in the Security Configuration window. Primary and secondary accounting servers are similar to the settings for RADIUS servers. The supplicant settings let you configure the IntelliJack as a supplicant to an 802.1X-enabled upstream switch[...]

52 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER SNMP Configuration 27 Click the SNMP Configuration tab to change the SNMP settings of the NJ220. 28 You can either Enable or Disable the “Set” operation of the IntelliJack. 29 Configure the “Get” and “Set” Community Strings for SNMP management operations. 30 Enable or Disable SN[...]

Changing Device Configuration 53 • An Auth Fail Trap indicates a wrong Community name in the SNMP transmission. • Vendor Specific Traps indicate 802.1X User Login, 802.1X User Logout, and 802.1X Login Failure when the IntelliJack is configured for 802.1X. 31 You can Set Trap Destination by entering the IP address of your SNMP management console[...]

54 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER You can change the Alert Level if you want to be notified of specific events happening with the IntelliJack. Each level above 0 provides different types of event alerts as described below: Port Based Controls 35 For the next three settings, first select the port you want to configure. 36 Yo[...]

Changing Device Configuration 55 With Data Rate Control settings, you can reduce the network traffic speed on the IntelliJack to as little as 128 Kbps. This can be useful if the machine is in a public area where you only want to provide a minimum speed connection. Even though there are only eight rate limiting choices in the pull-down menu, you can[...]

56 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER The values that remain unchanged when you click Restore Base Configuration are: • Group Name • Location Name • Password • IP Address • DHCP Settings • SNMP Get, Set, and Trap Community Strings • SNMP Trap Destination IP Address • Subnet Mask • Gateway • Device Log (store[...]

Changing Device Configuration 57 41 When you are finished entering the configuration changes to your NJ220 IntelliJack, click the OK button and a Configuration Progress dialog box will appear. If you don’t want to apply the changes you made, click Exit to discard those changes and exit the window. 42 If you click Configuration Summary, you will s[...]

58 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER The Restore operation lets you recover configurations you saved with Backup. When you initiate a Restore, you will be asked for the Secret Key you established with the Backup operation.[...]

Finding Computers Connected to NJ220 Devices 59 Finding Computers Connected to NJ220 Devices Occasionally you may need to find out which IntelliJack a networked device, such as a PC, is connected to. This is one of the many situations where the Location Information field of the NJ220 can be very useful. If you know the IP address or MAC address of [...]

60 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER Upgrading the NJ220 Firmware You can upgrade the firmware on your NJ220s over the network from the Central Configuration Manager. To do so, follow these steps: 1 Select one or more IntelliJacks you want to upgrade. You can select groups of IntelliJacks using one of the grouping options avai[...]

Upgrading the NJ220 Firmware 61 5 Select the time to perform the upgrade. You can either send the update file immediately or select a specific time and date to send the file. You may, for example, want to perform an upgrade during off hours such as a weekend. 6 Click Next and a window like this will appear: 7 Review the list of IntelliJacks you wan[...]

62 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER 8 Type your password in the Password field, then click Finish. The Upgrade Progress dialog box will appear.[...]

Upgrading the NJ220 Firmware 63 Viewing Log Files The Central Configuration Manager creates a log file with details of the firmware upgrades, configuration operations, and alert messages from the IntelliJack. This file is in the Central ConfiguratorLog subdirectory under the directory where you installed the IntelliJack configuration software. You[...]

64 C HAPTER 4: U SING THE C ENTRAL C ONFIGURATION M ANAGER Viewing and Canceling Scheduled Firmware Upgrades You can select a time and date to send an upgraded firmware image to the IntelliJacks in your network. To view and make changes to the firmware upgrades you have scheduled, follow these steps: 1 Select Manage Schedule from the Tools menu. A [...]

65 A Troubleshooting the NJ220 If you encounter problems with the IntelliJack: ■ Verify the IntelliJack is receiving power by viewing the Power LED (it should be on). If the Power LED is not on, make sure that: ■ If using power over Ethernet, the other end of the network cable is plugged into a switch on the network that has Power Over Ethernet[...]

Troubleshooting the NJ220 66 Green LEDs on Ports 1-4 are not on Network device has no connection to IntelliJack ■ Make sure the cable is properly connected to the network device. ■ Make sure the cable is firmly connected to one of the four IntelliJack ports labeled 1-4. ■ Make sure the cable is a good straight-through cable. Amber LED on Port[...]

B O BTAINING S UPPORT FOR Y OUR 3C OM P RO D U C T S 3Com offers pr oduct registration, case management, and r epair services through eSupport.3com.com . Y ou must have a user name and passwor d to access these serv ices, which are descri bed in this appendix. Register Y our Product to Gain Service Benefits T o take advantage of warranty and ot her[...]

68 A PPENDIX B: O BTAINING S UPPORT FOR Y OUR 3C OM P RODUCTS success of your networking projec ts. For mor e information on 3Com Extended W arranty and Prof essional Services, see: http://www .3com.com/ Contact your authorized 3Com reseller or 3C om for additional pr oduct and support information. See the table of access numbers later in this appe[...]

Contact Us 69 When you contact 3Com for assistanc e, please have the following information ready: ■ Product model name, part num ber , and serial number ■ A list of system hard ware and softwar e, in cluding revision level ■ Diagnostic err or messages ■ Details about recent configur ation changes, if applicable T o send a pr oduct directly [...]

70 A PPENDIX B: O BTAINING S UPPORT FOR Y OUR 3C OM P RODUCTS Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 0800 297 468 0800 71429 800 17309 0800 113153 0800 917959 0800 182 1502 06800 12813 1 800 553 117 180 945 3794 800 879489 Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.K. 8[...]

71 C Product Specifications Hardware Power consumption <5 watts without power forwarding Maximum 13 watts with power forwarding (depending on the device drawing power) Network Interface 10 Mbps Ethernet 10BASE-T Ethernet IEEE 802.3 industry standard for a 10 Mbps baseband CSMA/CD local area network 100 Mbps Ethernet 100BASE-TX Ethernet IEEE 802.[...]

Product Specifications 72 MIB Support 3Com Proprietary MIBs Standard Traps Proprietary Traps MIB II (RFC 1213) Bridge MIB (RFC 1493) Ether-like MIB (RFC 1643) MIB for MAUs (RFC 2668) MIB for bridge with extensions (RFC 2674) 802.1x MIBs RADIUS Authentication Client MIB (RFC 2618) RADIUS Accounting Client MIB (RFC 2620) Backup & Restore MIB RADI[...]

73 Power forwarding Power forwarding Port number 1 can be used with any standard networking device as well as to power a device such as a VoIP telephone on a network that uses IEEE 802.3af-compatible Power Over Ethernet. RMON Counters InUnicasts Total valid frames received with a unicast Destination Address. A valid frame has a good FCS and its siz[...]

Product Specifications 74 InDiscards Total valid frames received that are discarded due to lack of buffer space. This includes frames discarded at ingress as well as those dropped due to priority and congestion considerations at the output queues. Frames dropped at egress due to excessive collisions are not included but are counted in the Excessive[...]

75 Single Total number of successfully transmitted frames that experienced exactly one collision. Deferred Total number of successfully transmitted frames that are delayed because the medium is busy during the first attempt.[...]

Product Specifications 76[...]

R EGULATORY I NFORMATION FCC C OMPLIANCE This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC C LASS A V ERIFICATION S TATE[...]

J APAN VCCI C OMPLIANCE Translation: This is a Class A product based upon the standard of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may occur, in which case, the user may be required to take corrective actions.[...]